Recent questions in Physics

0 votes

0 answers

Two condensers `C_1 and C_2` in a circuit are joined as shown in figure. The potential of point A is `V_1` and that of B is `V_2` . The potential of point `D` will

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Two identical capacitors, have the same capacitance C. One of them is charged to potential `V_1` and the other to `V_2`. Likely charged plates are then connected. Then the decrease in energy of the combined system

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Two identical capacitors each of capacitance `5 muF` are charged to potentials `2 kV and 1 kV`, respectively and their negative ends are connected together. When the positive ends are also connected together, the loss of energy of the system

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A capacitor is charged by a battery, the battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

The physical quantity having SI unit `NC^(-1)m` is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A proton released from rest in an electric field, will start moving towards a region of............potential in the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Equipotential surface due to a point charge is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Electrostatic potential energy is stored when a dipole is placed in the electric field. The energy is maximum at .........

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A dielectric induces....... in an external electric field which decreases the net electric

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Choose the incorrect statement. Equipotential

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

The electrostatic potential on the surface of a charged conducting sphere is `100V`. Two statements are made in this regard `S_1` at any point inside the sphere, electric intensity is zero. `S_2` at any point inside the sphere, the electrostatic potential is `100V`. Which of the following is a correct

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Match the Column I (potential) with Column II (value) for electric potential at different points `P_1, P_2, P_3 and P_4` as shown in the figure with respect to an electric dipole.Each points `P_1, P_2, P_3 and P_4` are equal distance r from mid-point `O` of dipole. Column I Column II A. `V_1` p. 0 B. `V_2` q. `p/(4sqrt2pi epsilon_0r^2)` C. `V_3` r. `(-p)/(4piepsilon_0r^2)` D. `V_4` s. `p/(4pi epsilon_0r^2)`

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A parallel plate capacitor is charged by a battery which is then disconnected. A dielectric slab is then inserted to fill the space between the plates. Match the changes that could occur with Column II. Column I Column II A. Charge on the capacitor plates p. Decrease by a factor of K B. Intensity of electric field q. Increase by a factor of K C. Energy stored r. Remains same D. Capacitance s. None

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Match the Column I (energy of capacitor) with Column II (value) and select the correct answer from the codes given below. A capacitor `C_1` of capacitance C is charged to a potential difference `V_0`. The terminals of the charged capacitor are then connected to an uncharged capacitor `C_2` of capacitance C/2. Column I Column II A. Final energy of capacitor `C_1` p.`-(1'/'6) CV_0^2` B. Final energy of capacitor `C_2` q.`(1'/'6) CV_0^2` C. Final energy of the system r. `(1'/'3) CV_0^2` D. Change in energy on joining the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Assertion: Due to two point charges, electrical field and electric potential cannot be zero at same point simultaneously. Reason: Field is a vector quantity and potential a scalar

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Assertion: An electron moves from a region of lower potential to a region of higher potential. Reason: An electron has a negative

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Assertion: Five charges `+q` each are placed at Five vertices of a regular pentagon. A sixth charge `-Q`, is placed at the centre of pentagon, then net electrostatic force on `-Q`, is zero. Reason: Net electrostatic potential at the centre is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Assertion: Electric field is always normal to equipotential surfaces and along the direction of decreasing order of potential. Reason: Negative gradient of electric potential is electric

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Assertion: No work is done in moving a charge along equatorial line. Reason: The electric potential is everywhere zero on the equatorial line of a

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Assertion: The expression of potential energy `U=1/(4piepsilon_0)(q_1q_2)/(r_(12))` is unaltered whatever way the charges are brought to the specified locations. Reason: Path-independence of work for electrostatic

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

Recent questions in Physics

Categories